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Primary colours are those that cannot be obtained by mixing any other colours but can produce different colours when mixed together.The reflected ray is the ray of light that bounces back into the same medium after striking a reflecting surface.Water fills and smooths out the irregularities of the road surface, causing specular reflection of oncoming headlights that creates a distracting glare.The image formed by a plane mirror is of the same size as the object, is laterally inverted, and is situated at the same distance behind the mirror as the object is in front of it.A blue object appears blue because it absorbs all other colours of white light and reflects only the blue light.A translucent object is a material that lets only some light pass through it while reflecting the remaining portion.The theory of special relativity states that the speed of light is the maximum speed at which all matter in the universe can travel.Newton’s disc is a circular card painted with the seven colours of the rainbow that appears white when rotated rapidly due to the mixing of the colours.Mirrors are broadly classified into plane mirrors and spherical mirrors.Magenta is formed by mixing red and blue lights together.Lateral inversion is the phenomenon where the right side of an object appears as the left side in its reflected image, and vice versa.Secondary colours, also known as composite colours, are colours produced by mixing any two primary colours of light.A rainbow is formed when white sunlight passes through tiny water droplets in the atmosphere, which split the light into its seven constituent colours.Plane mirrors are commonly used as looking glasses, in barber shops, and in solar cookers or solar geysers.Diffused reflection is the irregular reflection of light from a rough surface, where parallel incident rays are reflected in different directions.The first law of reflection states that the incident ray, the reflected ray, and the normal at the point of incidence all lie in the same plane.The speed of light in water is 2.25 × 10⁸ m/s.Cyan is formed by mixing blue and green lights together.The angle of reflection is the angle formed between the reflected ray and the normal at the point of incidence.The speed of light in a vacuum is 29,97,92,458 metres per second.The shirt will appear green because yellow light is composed of red and green, and subtracting red leaves only green light to be reflected.It is written in a laterally inverted format so that drivers in front can read the word correctly when looking through their rear-view mirrors.When all three primary colours of light are mixed together, they produce white light.The white paper appears red because it reflects all colours of light falling on it, and only red light is available to be reflected.A kaleidoscope is an optical instrument containing mirrors used for producing colourful, symmetrical patterns.
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Chapter: 04. Light
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